Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d55eed6f8554433…

MALICIOUS

PDF

39.0 KB Created: 2020-08-15 13:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2eef0c3e37d3275ad1f21373fbb31ea SHA-1: ebe226a2c84c8318d30add6d1c2e8811879c0f05 SHA-256: 4d55eed6f8554433d2339048d3b30fa5cd3bdfe7dd6d6241824abb47f57f893c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, which is indicative of a link farm or phishing lure. The primary redirector URL, 'https://ttraff.ru/wb?keyword=belimo%20actuator%20installation%20manual', is flagged as malicious. This suggests the document is designed to trick users into visiting a malicious site, likely for credential harvesting or malware distribution. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/wb?keyword=belimo%20actuator%20installation%20manual In PDF document text
    • http://bimuga.scottyogilviephotography.com/uploads/1/3/0/8/130874276/1198139.pdfIn PDF document text
    • http://konemiti.npa-mn.org/uploads/1/3/1/4/131453540/4706316.pdfIn PDF document text
    • http://files.firstchristiantexascity.org/uploads/1/3/0/7/130775743/8416b5bebbe7e.pdfIn PDF document text
    • http://files.theconfidencefactorforwomen.com/uploads/1/3/1/3/131380440/rozarejixebol.pdfIn PDF document text
    • http://files.queertrash.nyc/uploads/1/3/0/7/130738512/rumagup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22411539251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/34235154843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/fenuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4135/7973/files/varugaritesutomexijovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/1043369163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5221/files/metumiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/5681581576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3761/4499/files/seasons_worksheets_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8227/6250/files/sefegom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6558/1469/files/desozedozuwetijopud.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4B 4996 bytes
SHA-256: c80c3f034963e20c074154da9fb598ab94fcc270f22ce4e03492a014afdfd788
font_01_sfnt_off00006d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D23 9968 bytes
SHA-256: bbe9ada9d7671d8ac13e685fb4a70e18b1783e70f412ae19f88679272425c8d3

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